The airway is now called Q41 and the base of it is FL35 which can be lost due to pressure changes.
Yes, I was looking at my old chart - and I assume it is still FL35 or 3,014 AMSL whichever is higher.
I would agree with Mr Flynn - this really is a peculiarity of the way we do things. The airspace and services are hopelessly unintergrated - you should how this sort of thing is done in the States, whether you are VFR or IFR, inside or outside of CAS; dont tell me they have more money, less traffic, less complicated airspace or whichever other excuse we may like to pick.
